CN105840459A - Sound insulation and noise reduction method and device for MVR energy saving vaporization system - Google Patents
Sound insulation and noise reduction method and device for MVR energy saving vaporization system Download PDFInfo
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- CN105840459A CN105840459A CN201610205348.3A CN201610205348A CN105840459A CN 105840459 A CN105840459 A CN 105840459A CN 201610205348 A CN201610205348 A CN 201610205348A CN 105840459 A CN105840459 A CN 105840459A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0033—Pulsation and noise damping means with encapsulations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compressor (AREA)
Abstract
The invention discloses a sound insulation and noise reduction method and device for an MVR energy saving vaporization system. A lobed rotor compressor is subjected to sound insulation and noise reduction through a sound insulation cover formed by combining reinforcing ribs, a sound insulation layer, a damping layer and a sound absorption layer, and natural negative pressure heat dissipation is conducted on the sound insulation cover; noise in the sound insulation cover is absorbed through a sound absorption layer of a composite sound absorption and insulation steel plate at first and then secondarily absorbed through a damping layer of the composite sound absorption and insulation steel plate, and after being insulated and weakened, the noise enters a silencer to be subjected to sound attenuation and then is emitted out of a room; a combined heat preservation sound insulation noise reduction material composed of rock wool, a damping material body, a sound-proof felt and an aluminum sheet is applied to a horizontal heat exchanger so that sound reflection can be reduced, that is, reverberation in the sound space can be avoided, and the strength of pipeline vibration radiating outwards is reduced, vibration produced due to the fact that a pipeline is rubbed by gas is inhibited, the situation that a large amount of sound energy is consumed is avoided, and the noise level is decreased; and meanwhile, the influence of inhibiting and weakening resonance and being consistent with response is achieved. According to the sound insulation and noise reduction method and device for the MVR energy saving vaporization system, the noise which is more than three meters away from the device is reduced to 70 dB or less from 110 dB, and plant boundary noise is reduced to 60 dB or less.
Description
Technical field
The present invention relates to a kind of MVR energy-conservation vapo(u)rization system sound-proof noise reducing method and equipment thereof, be specifically related to Roots Compressor and horizontal heat exchanger damping and de-noising method, equipment and the application of sound insulation and noise reduction material.
Background technology
Currently, noise has become a kind of main environmental pollution, and the noise circumstance problem of operating mode is increasingly by concern and the attention of people.By testing MVR autonomous device noise, main noise has air power noise, mechanical noise and electromagnetic noise, and its noise main source has lobed rotor compressor (fan body, motor) and horizontal heat exchanger pipeline.Fan noise mainly has air power noise and mechanical noise, and its noise figure is typically at 115dB(A) left and right；Noise of motor predominantly organic tool noise and electromagnetic noise, its noise figure is typically at 100-105dB(A) between；Duct noise mainly has noise of equipment structure-borne, fluid scouring and collision, control valve to conflux the noises such as impact, and its noise figure is typically at 95-102dB(A) more than.
The energy-conservation vapo(u)rization system of existing MVR uses roots-type steam compressor as power source, bedroom heat exchanger is as material heating condensate water enrichment plant, by compressor to steam latent heat in the heat exchanger recovery system of indirect steam recompression intensification entrance bedroom, it is achieved system thermal circulates to process waste water.There is following defect in the energy-conservation vapo(u)rization system of this MVR: one is that Roots Compressor mechanical vibration amplitude is too big, causes connecting line to resonate, produces low frequency noise and propagate remote；Two is that compressed air stream enters bedroom heat exchanger, and fluid scouring and collision, control valve are confluxed the noises such as impact, reach 95-102dB(A in its noise figure 3m) more than, people works the most in the present context and can cause hearing loss and occupational deafness.
Owing in MVR energy-conservation evaporation system self-regulation examination Factory Building, noise is up to more than 110dB, factory circle noise 70 ~ 80dB, at this, noise is seriously beyond national standard, workman cannot be carried out work (< 85dB) in the environment, if in town dweller region, factory's circle noise relative requirement more strict (national regulation < 60dB).Therefore MVR energy-conservation vapo(u)rization system sound insulation and noise reduction is imperative, and noise problem could not solve the energy-conservation vapo(u)rization system of MVR and will be unable to start operation.
Summary of the invention
It is an object of the invention to provide a kind of MVR energy-conservation vapo(u)rization system sound-proof noise reducing method and equipment, make three meters of external noises of equipment be down to below 70dB by 110dB, factory's circle noise is down to below 60dB.
For realizing object above, MVR of the present invention energy-conservation vapo(u)rization system sound-proof noise reducing method carries out noise reduction process to vapo(u)rization system periphery, and technical scheme includes:
(1) use blimp that lobed rotor compressor carries out sound insulation and noise reduction: described blimp is by being combined sound absorption steel plate and damping base forms；Described compound sound absorption steel plate includes reinforcement, sound insulating layer, damping layer and absorbent treatment；It is beneficial to Roots blower forms negative pressure in motor side acoustic hood side bottom hole of blowing in, when making airflow passes motor and body, blimp is carried out nature negative pressure cooling, it is to avoid cause sound insulation house motor overheating problem because of airtight；Arranging deafener between exhaust fan and air holes, the noise in blimp is first through the absorbent treatment absorption of compound sound absorption steel plate, by damping layer double absorption, intercepts the noise after weakening and enters discharge outdoor after deafener noise reduction.
(2) horizontal heat exchanger use rock wool, damping material and deadening felt+aluminum skin form composite thermal insulation sound insulation and noise reduction material to reduce its high frequency noise, reduce the reverberation that sonic reflection is i.e. avoided occurring in sound space, reduce pipe vibration to extraradial intensity, the produced vibration of suppression gas friction pipeline, reduce level of noise by a large amount of acoustic energy are lost, suppress simultaneously and weaken resonance and the impact of the response that coincide.
The equipment that MVR of the present invention energy-conservation vapo(u)rization system sound-proof noise reducing method uses includes the sound insulation and noise reduction equipment of lobed rotor compressor and the sound insulation and noise reduction equipment of horizontal heat exchanger:
(1) the sound insulation and noise reduction equipment of lobed rotor compressor is to use blimp to carry out noise reduction lobed rotor compressor, and described blimp is by being combined sound absorption steel plate and damping base forms；Described compound sound absorption steel plate outermost layer is galvanized sheet and the support as whole blimp of Os Draconis composition, the second layer is damping layer, third layer is absorbent treatment, and innermost layer uses hydrophobic glass-fiber-fabric parcel+zinc-plated orifice plate to seal with sound absorbing material layer with to junction in order to fixing damping layer；Blow in hole in motor side acoustic hood side bottom, deafener is set between exhaust fan and air holes；The bottom of described blimp uses from folding Cao and configures Rubber shock-absorbing pad sealing；Configuring multiple rubber mount in described damping base, rubber mount lower end of the bolt is arranged on the pre-channel-section steel being embedded in foundation of civil work, and epimere bolt is connected with compressor steel frame base, and the load of compressor and vibration are evenly distributed on six rubber mounts.
(2) the three layers of package structure in China and foreign countries in the sound insulation and noise reduction equipment of horizontal heat exchanger uses, internal layer uses rock wool to make sound absorption heat insulation material, and intermediate layer uses damping material, and outer layer uses aluminum skin and deadening felt.
Described damping layer uses acrylate and the damp composite material of butyl rubber composition.
Described absorbent treatment uses acoustical cotton.
Described deafener is made up of the resistive muffler being sequentially arranged between exhaust fan and air holes and resistant noise-reducing device.
Above-mentioned MVR energy-conservation vapo(u)rization system sound-proof noise reducing method and equipment thereof are according to the noise properties of the energy-conservation vapo(u)rization system of existing MVR, utilize the Principles of Acoustics such as sound insulation, sound-absorbing, resonance, use and outer every, the method such as interior suction, noise reduction and damping, device carried out comprehensive control, the noise making device is effectively controlled, under equipment normal boot-strap ruuning situation: three meters of external noises of equipment are down to below 70dB by 115dB, and factory's circle noise is down to below 60dB.
Accompanying drawing explanation
Fig. 1 is sound-proof noise reducing method and the main cross-sectional schematic of blimp of equipment of the energy-conservation vapo(u)rization system of MVR of the present invention.
Fig. 2 is sound-proof noise reducing method and the horizontal heat exchanger schematic front view of equipment of the energy-conservation vapo(u)rization system of MVR of the present invention.
Fig. 3 is sound-proof noise reducing method and the left cross-sectional schematic of horizontal heat exchanger of equipment of the energy-conservation vapo(u)rization system of MVR of the present invention.
Reference:Galvanized sheet 1, damping layer 2, absorbent treatment 3, hydrophobic glass-fiber-fabric parcel+zinc-plated orifice plate 4, damping base 5, exhaust fan 6, acoustical cotton 7, impedance complex formula deafener 8, air outlet silencing device 9, air holes 10, horizontal heat exchanger 11, deadening felt+aluminum skin 12, damping material 13, sound absorption heat insulation material 14.
Detailed description of the invention
Sound-proof noise reducing method and the equipment of vapo(u)rization system energy-conservation to MVR of the present invention with detailed description of the invention is described in further detail below in conjunction with the accompanying drawings.
The sound-proof noise reducing method of the energy-conservation vapo(u)rization system of MVR of the present invention shown in Fig. 1-Fig. 3 and the specific embodiments of equipment are as follows:
(1) sound insulation and noise reduction of lobed rotor compressor: using blimp to carry out noise reduction lobed rotor compressor, blimp is made up of compound sound absorption steel plate thick for 100mm and damping base 5；The absorbent treatment 3 of the compound sound absorption steel plate of the first warp of the noise in blimp absorbs, and by damping layer 2 double absorption of compound sound absorption steel plate, intercepts discharge after weakening the entrance deafener noise reduction of rear noise outdoor.
Described blimp is made up of compound sound absorption steel plate thick for 100mm and damping base 5；Described compound sound absorption steel plate outermost layer is 5mm galvanized sheet 1 and Os Draconis composition, as whole blimp support；The second layer is 40mm damping layer 2, uses the damp composite material of acrylate and butyl rubber composition to be used for controlling vibration and noise；Third layer is 50mm absorbent treatment 3, uses acoustical cotton to absorb noise；Innermost layer uses hydrophobic glass-fiber-fabric parcel+zinc-plated orifice plate 4, seals with sound absorbing material layer with to junction with fixing damping layer；It is beneficial to Roots blower forms negative pressure in motor side acoustic hood side bottom hole 10 of blowing in, when making airflow passes motor and body, blimp is carried out nature negative pressure cooling, it is to avoid cause sound insulation house motor overheating problem because of airtight；Arranging resistive muffler 8 and resistant noise-reducing device 9 between exhaust fan 6 and air holes 10, the absorbent treatment 3 of the compound sound absorption steel plate of the first warp of the noise in blimp absorbs, and by damping layer 2 double absorption, intercepts discharge after the noise after weakening enters deafener noise reduction outdoor.
The bottom of described blimp uses 5mm from folding Cao and to configure Rubber shock-absorbing pad sealing；Multiple rubber mount is configured in described damping base 5, rubber mount lower end of the bolt is installed on 2500mm foundation of civil work channel-section steel, epimere bolt is connected with compressor steel frame base, the load of compressor and vibration are evenly distributed on six rubber mounts, mechanical shock that thatch formula steam compressor run duration cause is greatly lowered, be conducive to steadily crossing resonance region, decay dither and noise.Test the outer 70dB of sound insulation house that three meters of external noises are dropped to by original 115dB.
(2) sound insulation and noise reduction of horizontal heat exchanger: internal layer uses 10cm rock wool 14 to make sound absorption heat insulation material, when the ripple in air incides on rock wool, acoustic energy is changed into heat energy dissipates by the internal loss of rock wool material, reduce the reverberation that sonic reflection is i.e. avoided occurring in sound space, reduce pipe vibration to extraradial intensity；Intermediate layer uses the damping material 13 that 2mm is thick, and this material can effectively suppress the produced vibration of gas friction pipeline, a large amount of acoustic energy is lost, reduces level of noise, is provided simultaneously with suppression and weakens resonance and the impact of the response that coincide；Outer layer uses aluminum skin and deadening felt 12, sound source separately or is isolated, blocks air borne, thus reach sound insulation purpose.Process for keypoint part emphasis, take the double structure that interior suction layer one weight one is light；One meter of external noise of test equipment is fallen below 70-75dB by 95-102 dB.
Claims (5)
1. a MVR energy-conservation vapo(u)rization system sound-proof noise reducing method, is characterized in that: it carries out noise reduction process to vapo(u)rization system periphery, and technical scheme includes:
(1) use blimp that lobed rotor compressor carries out sound insulation and noise reduction: described blimp is by being combined sound absorption steel plate and damping base forms；Described compound sound absorption steel plate includes reinforcement, sound insulating layer, damping layer and absorbent treatment；It is beneficial to Roots blower forms negative pressure in motor side acoustic hood side bottom hole of blowing in, when making airflow passes motor and body, blimp is carried out nature negative pressure cooling, it is to avoid cause sound insulation house motor overheating problem because of airtight；Arranging deafener between exhaust fan and air holes, the noise in blimp is first through the absorbent treatment absorption of compound sound absorption steel plate, by damping layer double absorption, intercepts the noise after weakening and enters discharge outdoor after deafener noise reduction；
(2) horizontal heat exchanger use rock wool, damping material and deadening felt+aluminum skin form composite thermal insulation sound insulation and noise reduction material to reduce its high frequency noise, reduce the reverberation that sonic reflection is i.e. avoided occurring in sound space, reduce pipe vibration to extraradial intensity, the produced vibration of suppression gas friction pipeline, reduce level of noise by a large amount of acoustic energy are lost, suppress simultaneously and weaken resonance and the impact of the response that coincide.
2. realize an equipment for the energy-conservation vapo(u)rization system sound-proof noise reducing method of MVR described in claim 1, it is characterized in that: it includes sound insulation and noise reduction equipment and the sound insulation and noise reduction equipment of horizontal heat exchanger of lobed rotor compressor:
The sound insulation and noise reduction equipment of described lobed rotor compressor is to use blimp to carry out noise reduction lobed rotor compressor, and described blimp is by being combined sound absorption steel plate and damping base forms；Described compound sound absorption steel plate outermost layer is galvanized sheet and the support as whole blimp of Os Draconis composition, the second layer is damping layer, third layer is absorbent treatment, and innermost layer uses hydrophobic glass-fiber-fabric parcel+zinc-plated orifice plate to seal with sound absorbing material layer with to junction in order to fixing damping layer；Blow in hole in motor side acoustic hood side bottom, deafener is set between exhaust fan and air holes；The bottom of described blimp uses from folding Cao and configures Rubber shock-absorbing pad sealing；Configuring multiple rubber mount in described damping base, rubber mount lower end of the bolt is arranged on the pre-channel-section steel being embedded in foundation of civil work, and epimere bolt is connected with compressor steel frame base, and the load of compressor and vibration are evenly distributed on six rubber mounts；
The sound insulation and noise reduction equipment of described horizontal heat exchanger uses the three layers of package structure in interior China and foreign countries, and internal layer uses rock wool to make sound absorption heat insulation material, and intermediate layer uses damping material, and outer layer uses aluminum skin and deadening felt.
Realize the equipment of MVR energy-conservation vapo(u)rization system sound-proof noise reducing method the most as claimed in claim 2, it is characterized in that: described damping layer uses acrylate and the damp composite material of butyl rubber composition.
Realize the equipment of MVR energy-conservation vapo(u)rization system sound-proof noise reducing method the most as claimed in claim 2, it is characterized in that: described absorbent treatment uses acoustical cotton.
Realize the equipment of MVR energy-conservation vapo(u)rization system sound-proof noise reducing method the most as claimed in claim 2, it is characterized in that: described deafener is made up of the resistive muffler being sequentially arranged between exhaust fan and air holes and resistant noise-reducing device.
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| CN201610205348.3A CN105840459B (en) | 2016-04-05 | 2016-04-05 | The sound-proof noise reducing method and equipment of the energy saving vapo(u)rization systems of MVR |
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| CN201610205348.3A CN105840459B (en) | 2016-04-05 | 2016-04-05 | The sound-proof noise reducing method and equipment of the energy saving vapo(u)rization systems of MVR |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907325A (en) * | 2017-04-17 | 2017-06-30 | 贾善余 | A kind of mechanical pump denoising device |
| CN109973386A (en) * | 2019-03-16 | 2019-07-05 | 山东瑞拓鼓风机有限公司 | Air suspension vapour compression machine |
| CN111206985A (en) * | 2018-11-21 | 2020-05-29 | 通用汽车环球科技运作有限责任公司 | Vehicle charge air cooler with integrated resonator |
| CN113738619A (en) * | 2021-08-31 | 2021-12-03 | 刘�东 | Natural gas compressor unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111206985A (en) * | 2018-11-21 | 2020-05-29 | 通用汽车环球科技运作有限责任公司 | Vehicle charge air cooler with integrated resonator |
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Effective date of registration: 20210316 Address after: 364200 No.100, QinGang Road, Nangang Industrial Zone, Shanghang County, Longyan City, Fujian Province Patentee after: ZIJIN MINING GROUP GOLD SMELTING Co.,Ltd. Address before: 364200 Zijin building, Zijin Road, Shanghang County, Longyan, Fujian, China, 1 Patentee before: ZIJIN MINING GROUP Co.,Ltd. |
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